Esprima Alternatives

esprima reviews and mentions

• Advanced Techniques for Parsing and Interpreting JavaScript Code
  3 projects | dev.to | 16 Jun 2025

  For more comprehensive parsing, developers have commonly turned to libraries like Acorn and Esprima.

• Running Untrusted JavaScript Code
  3 projects | dev.to | 21 Jul 2024

  I'm particularly fond of Firecracker, but it’s a bit of work to set up, so if you cannot afford the time yet, you want to be on the safe side, do a combination of static analysis and time-boxing execution. You can use esprima to parse the code and check for any malicious act.

• ESLint: under the hood
  4 projects | dev.to | 7 Nov 2023

  Focusing again on ESLint, the parser used by the linter is called Espree. This is an in-house parser built by the ESLint folks to fully support ECMAScript 6 and JSX on top of the already existing Esprima. The Espree module provide APIs for both tokenization and parsing that you can easily test out.

• Why you don’t need TypeScript
  1 project | /r/typescript | 19 May 2023

  For TypeScript we have used AST transforms from their compiler API, and for plain JavaScript we did a similar thing using ESPrima. This helped us implement some simple optimizations like stream fusion (combining .filter and .map into a single operation) or avoiding extra object allocations in vector math, which led to nice performance improvements in code that does heavy computation (we process large amounts of data on the server and store results of physics simulations).

• Algorithm to simplify a 100-variable Boolean expression?
  1 project | /r/algorithms | 4 Jun 2022

  I used ESPrima, but any parser would do in this case. I then wrote a simple function to extract all "atomic" non-boolean expressions from it.

• How to make your own programming language in JavaScript
  6 projects | dev.to | 7 May 2022

  AST is an acronym for Abstract Syntax Tree. It's the way to represent code in a format that tools can understand. Usually in form of tree data structure. We will use AST in the format of an Esprima, which is a JavaScript parser that outputs AST.

• What the heck is an Abstract Syntax Tree (AST) ?
  5 projects | dev.to | 23 Apr 2022

  esprima

• Abstract Syntax Trees: They're Actually Used Everywhere -- But What Are They?
  4 projects | dev.to | 17 Nov 2021

  Create an AST: Esprima

• We Switched from Webpack to Vite
  15 projects | news.ycombinator.com | 28 Apr 2021

  The thread was originally about CRA vs Vite size on disk (or implicitly, if we're applying it to real world applications, network cost in CI job startup times). And like I said, surrogate pairs don't apply to ASCII.

  See this[0] for reference. Note how the first byte must fall within a certain range in order to signal being a surrogate pair. This fact is taken advantage of by JS parsers to make parsing of ASCII code faster by special casing that range, since checking for a valid character in the entire unicode range is quite a bit more expensive[1].

  [0] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

  [1] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

• How to create your own language that compile to JavaScript
  3 projects | /r/javascript | 15 Apr 2021

  If you want to learn more about parsing, reading the code of an actual recursive parser might be a better idea. Esprima is a decent place to start if you're interested in JS grammar. Then you can look at the babel handbook to learn more about AST transformations. From there, the literature gets quite a bit more heavy. If you get this far and are willing to push further, you'll probably want to grab yourself a copy of the dragon book at a minimum.

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  www.influxdata.com | 23 Jun 2025

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